Sunk and opportunity costs for decision- making. Mrs Johnston has taken out a lease on a shop for a down payment of 5000. Additionally, the rent under the lease amounts to 5000 per annum. If the lease is cancelled, the initial payment of 5000 is forfeit. Mrs Johnston plans to use the shop for the sale of clothing, and has estimated operations for the next 12 months as follows: () () Sales 115000 Less Value-added tax (VAT) 15000 Sales less VAT 100000 Cost of goods sold 50000 Wages and wage related costs 12000 Rent including down payment 10000 Rates, heating, lighting and insurance 13000 Audit, legal and general expenses 2000 87000 Net profit before tax 13000 In the figures, no provision has been made for the cost of Mrs Johnston but it is estimated that one half of her time will be devoted to the business. She is undecided whether to continue with her plans, because she knows that she can sublet the shop to a friend for a monthly rent of 550 if she does not use the shop herself. You are required to: (a) (i) explain and identify the 'sunk' and 'opportunity' costs in the situation depicted above; (ii) state what decision Mrs Johnston should make according to the information given, supporting your conclusion with a financial statement